The manual jsp compilation can be done with ojspcompile.sh. But we can also enable the automatic compilation of jsp's.
   
Steps for Enabling Automatic Compilation of JSP's

Step 1:
Go to $INST_TOP/appl/admin and edit the parameter s_jsp_main_mode and change its value from
'justrun' to 'recompile' in the context file.

cd $INST_TOP/appl/admin/

grep -i s_jsp_main_mode <SID>_<Hostname>.xml

Step 2:
Update
  <jsp_debug_parameters oa_var="s_jsp_main_mode">justrun</jsp_debug_parameters>
to
  <jsp_debug_parameters oa_var="s_jsp_main_mode">recompile</jsp_debug_parameters>

Step 3:
Stop the application services and Run autoconfig .
$INST_TOP/admin/scripts/adautocfg.sh

Step 4:
Verify that the
$INST_TOP/ora/10.1.3/j2ee/oacore/application-deployments/oacore/html/orion-web.xml
has below entry.

<init-param>
<param-name>main_mode</param-name>
<param-value>recompile</param-value>
</init-param>